It'll be interesting to see others comments on this one.

I'm sure we'll see the YS people espousing that product, the OS people espousing that one and the myriad others espousing those products. I specifically limited my answer to address the two engines in your original question.

With that being said, If I was to build another Showtime (My last one broke[&o]) and could choose any engine, it would be a YS 110 (I only bought my first one of this brand a few months ago) - We all have throttle thumbs right???